fix(tlon): restore buildTlonAccountFields for allowPrivateNetwork

The inlined payload building was missing allowPrivateNetwork field,
which would prevent the setting from being persisted to config.

extensions/tlon/src/channel.ts

@@ -10,6 +10,7 @@ import {
   DEFAULT_ACCOUNT_ID,
   normalizeAccountId,
 } from "openclaw/plugin-sdk";
+import { buildTlonAccountFields } from "./account-fields.js";
 import { tlonChannelConfigSchema } from "./config-schema.js";
 import { monitorTlonProvider } from "./monitor/index.js";
 import { tlonOnboardingAdapter } from "./onboarding.js";
@@ -80,6 +81,7 @@ type TlonSetupInput = ChannelSetupInput & {
   ship?: string;
   url?: string;
   code?: string;
+  allowPrivateNetwork?: boolean;
   groupChannels?: string[];
   dmAllowlist?: string[];
   autoDiscoverChannels?: boolean;
@@ -100,16 +102,7 @@ function applyTlonSetupConfig(params: {
   });
   const base = namedConfig.channels?.tlon ?? {};
 
-  const payload = {
-    ...(input.ship ? { ship: input.ship } : {}),
-    ...(input.url ? { url: input.url } : {}),
-    ...(input.code ? { code: input.code } : {}),
-    ...(input.groupChannels ? { groupChannels: input.groupChannels } : {}),
-    ...(input.dmAllowlist ? { dmAllowlist: input.dmAllowlist } : {}),
-    ...(typeof input.autoDiscoverChannels === "boolean"
-      ? { autoDiscoverChannels: input.autoDiscoverChannels }
-      : {}),
-  };
+  const payload = buildTlonAccountFields(input);
 
   if (useDefault) {
     return {